xamarin.ios - BaseTypeAttribute not found in a binding project -

I am trying to create XMarine binding for Oja-C library. I'm following the guide provided from me

Everything goes well, creates an objective sharp interface and no error has been made. This happens when I try to compile the solution [basestip] (the basestep feature class) was not found.

Does anyone know what I am missing? Where is the bastip attribute class defined?

Thanks, Igniteo

API definition files are compiled using Btouch tool A C # compiler BTouch tool is compiled against your API definition itself, where type is defined.